A/d converter

Abstract

Delay compensation of feedback of a delta-sigma AD converter is performed in a digital domain. An AD converter includes an integration circuit that performs integration on the basis of an input signal and a first feedback signal fed back to the input signal, a first quantization circuit that performs first quantization on the basis of an output of the integration circuit, and a second quantization circuit that performs second quantization with accuracy coarser than the first quantization on the basis of an output of the first quantization circuit and a second feedback signal fed back to the output of the first quantization circuit. A DA converter that generates the first feedback signal on the basis of an output of the second quantization circuit may be further included.

Dependencies are inferred from the claim text.